syzbot


WARNING in geneve_xmit

Status: fixed on 2024/06/20 20:31
Subsystems: net
[Documentation on labels]
Fix commit: d8a6213d70ac geneve: fix header validation in geneve[6]_xmit_skb
First crash: 85d, last: 78d
Cause bisection: introduced by (bisect log) :
commit 219eee9c0d16f1b754a8b85275854ab17df0850a
Author: Florian Westphal <fw@strlen.de>
Date: Fri Feb 16 11:36:57 2024 +0000

  net: skbuff: add overflow debug check to pull/push helpers

Crash: WARNING in geneve_xmit (log)
Repro: C syz .config
  
Last patch testing requests (1)
Created Duration User Patch Repo Result
2024/05/10 09:01 25m retest repro bpf OK log

Sample crash report:
netlink: 'syz-executor781': attribute type 10 has an invalid length.
geneve0: entered promiscuous mode
bond0: (slave geneve0): Enslaving as an active interface with an up link
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5075 at include/linux/skbuff.h:2740 pskb_may_pull_reason include/linux/skbuff.h:2740 [inline]
WARNING: CPU: 1 PID: 5075 at include/linux/skbuff.h:2740 pskb_may_pull include/linux/skbuff.h:2756 [inline]
WARNING: CPU: 1 PID: 5075 at include/linux/skbuff.h:2740 pskb_network_may_pull include/linux/skbuff.h:3077 [inline]
WARNING: CPU: 1 PID: 5075 at include/linux/skbuff.h:2740 pskb_inet_may_pull include/net/ip_tunnels.h:361 [inline]
WARNING: CPU: 1 PID: 5075 at include/linux/skbuff.h:2740 geneve_xmit_skb drivers/net/geneve.c:825 [inline]
WARNING: CPU: 1 PID: 5075 at include/linux/skbuff.h:2740 geneve_xmit+0x229e/0x31a0 drivers/net/geneve.c:1030
Modules linked in:
CPU: 1 PID: 5075 Comm: syz-executor781 Not tainted 6.8.0-syzkaller-05236-g443574b03387 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:pskb_may_pull_reason include/linux/skbuff.h:2740 [inline]
RIP: 0010:pskb_may_pull include/linux/skbuff.h:2756 [inline]
RIP: 0010:pskb_network_may_pull include/linux/skbuff.h:3077 [inline]
RIP: 0010:pskb_inet_may_pull include/net/ip_tunnels.h:361 [inline]
RIP: 0010:geneve_xmit_skb drivers/net/geneve.c:825 [inline]
RIP: 0010:geneve_xmit+0x229e/0x31a0 drivers/net/geneve.c:1030
Code: f7 e8 26 84 dd 02 49 8d bf 68 02 00 00 be 08 00 00 00 e8 75 81 97 fb f0 49 ff 87 68 02 00 00 e9 9c 01 00 00 e8 43 37 34 fb 90 <0f> 0b 90 e9 1b e2 ff ff 44 89 f7 44 89 fe e8 ef 38 34 fb 45 39 fe
RSP: 0018:ffffc90003b5ed40 EFLAGS: 00010293
RAX: ffffffff8660b92d RBX: ffff88802d7bed58 RCX: ffff88802922da00
RDX: 0000000000000000 RSI: 00000000ffffffb6 RDI: 0000000000000000
RBP: ffffc90003b5ef60 R08: ffffffff86609b43 R09: 1ffffffff2598ea0
R10: dffffc0000000000 R11: fffffbfff2598ea1 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88802d7bec80 R15: 00000000ffffffb6
FS:  0000555585067380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020010000 CR3: 000000001dfac000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __netdev_start_xmit include/linux/netdevice.h:4903 [inline]
 netdev_start_xmit include/linux/netdevice.h:4917 [inline]
 xmit_one net/core/dev.c:3531 [inline]
 dev_hard_start_xmit+0x26a/0x790 net/core/dev.c:3547
 __dev_queue_xmit+0x19f4/0x3b10 net/core/dev.c:4335
 bond_start_xmit+0x1389/0x1c40 drivers/net/bonding/bond_main.c:5469
 __netdev_start_xmit include/linux/netdevice.h:4903 [inline]
 netdev_start_xmit include/linux/netdevice.h:4917 [inline]
 xmit_one net/core/dev.c:3531 [inline]
 dev_hard_start_xmit+0x26a/0x790 net/core/dev.c:3547
 __dev_queue_xmit+0x19f4/0x3b10 net/core/dev.c:4335
 packet_snd net/packet/af_packet.c:3083 [inline]
 packet_sendmsg+0x4932/0x63d0 net/packet/af_packet.c:3115
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:745
 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584
 ___sys_sendmsg net/socket.c:2638 [inline]
 __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fbe4e2b62d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd63906348 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fbe4e2b62d9
RDX: 00000000200400c4 RSI: 0000000020000180 RDI: 0000000000000004
RBP: 00007ffd63906380 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000004 R11: 0000000000000246 R12: 00000000000f4240
R13: 00007fbe4e30301d R14: 00007ffd63906364 R15: 00007ffd63906370
 </TASK>

Crashes (42):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/19 21:42 bpf 443574b03387 af24b050 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/26 07:31 bpf 443574b03387 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/25 23:27 bpf 443574b03387 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/25 14:31 bpf 443574b03387 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/25 14:27 bpf 443574b03387 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/25 13:53 bpf 443574b03387 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/25 13:47 bpf 443574b03387 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/25 13:38 bpf 443574b03387 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/25 07:40 bpf 443574b03387 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/24 11:51 bpf 443574b03387 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/24 06:06 bpf 443574b03387 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/24 03:05 bpf 443574b03387 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/24 02:12 bpf 443574b03387 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/24 02:11 bpf 443574b03387 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/23 23:07 bpf 443574b03387 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/23 22:00 bpf 443574b03387 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/23 17:48 bpf 443574b03387 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/23 17:08 bpf 443574b03387 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/23 10:21 bpf 443574b03387 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/22 09:57 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/22 06:06 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/22 04:34 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/22 01:22 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/21 20:09 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/21 19:09 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/21 14:06 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/21 05:00 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/21 04:31 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/20 13:44 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/20 12:48 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/20 08:01 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/20 03:25 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/20 03:01 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/20 02:45 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/20 02:04 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/19 21:15 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/19 21:12 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/19 21:00 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/19 20:59 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/19 19:18 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/19 16:25 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
2024/04/19 12:29 bpf 443574b03387 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce WARNING in geneve_xmit
* Struck through repros no longer work on HEAD.